Distributed Antenna System Power-Balanced Precoding
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Solution Overview
Problem
Current multi-user MIMO communication systems with co-located antenna systems are inefficient for multi-user communications and do not effectively account for per-antenna power constraints, limiting their performance in wireless networks.
Innovation Solution
Deploying a distributed antenna system with power-balanced pre-coding and device localization using time-difference-of-arrival techniques, enabling medium access techniques for multi-user wireless transmissions and improving network capacity and device localization accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If co-located antenna systems are deployed at access points or base stations, then single user communication performance is improved, but multi-user MIMO communication efficiency deteriorates
Solution Approach 1:
The patent segments the antenna system into distributed antenna elements spread across multiple locations rather than co-located at a single access point. This segmentation enables spatial diversity for multi-user MIMO communications while maintaining dedicated antenna resources for single user communications, thereby resolving the contradiction between single-user performance and multi-user efficiency
Solution Approach 2:
The patent transitions from a two-dimensional co-located antenna array to a three-dimensional distributed antenna deployment across multiple spatial locations. This dimensional expansion provides additional spatial degrees of freedom for multi-user MIMO operations without compromising single-user communication performance at any specific location
2Device complexity
If conventional transmission strategies are retained with co-located antenna systems, then implementation simplicity is maintained, but MU-MIMO performance improvement is limited
Solution Approach 1:
The patent implements dynamic resource allocation and adaptive transmission strategies for the distributed antenna system. The system dynamically assigns antenna resources to different users based on channel conditions, enabling flexible MU-MIMO operations that achieve significant performance improvements while maintaining manageable complexity through standardized protocols
3Adaptability or versatility
If per-antenna power constraints are not accounted for, then power allocation flexibility is increased, but practical implementation feasibility deteriorates
Solution Approach 1:
The patent applies local quality control by enforcing per-antenna power constraints at each distributed antenna location rather than uniform power allocation across the entire system. This approach maintains practical implementation feasibility by respecting individual antenna capabilities while preserving overall system flexibility through localized power management
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Significantly enhances the performance of multi-user transmissions and network capacity while enabling accurate indoor localization of client devices with light-weight and low complexity solutions, without additional infrastructure expenses.
Implementation Method 1
The access point or base station includes a device localizer for providing device localization for devices communicating with the distributed antenna system by applying time-difference-of-arrival techniques to antenna pairs from among the plurality of antennas
Data Source
AI summary
A system and a method are provided. The method includes deploying a plurality of antennas of an access point or a base station as a distributed antenna system. The method further includes configuring the distributed antenna system for multi-user wireless transmissions by applying medium access techniques and power-balanced pre-coding at the access point or the base station. The method also includes providing device localization for devices communicating with the distributed antenna system by applying time-difference-of-arrival techniques to antenna pairs from among the plurality of antennas at the access point or the base station.